WATCH: Here’s Biz Markie Singing About Cereal

Here’s the skinny: General Mills is releasing limited edition boxes of Lucky Charms with ONLY MARSHMALLOWS! But there’s a catch; there are only 10 boxes available AND to be eligible for one you have to post a photo of yourself holding an imaginary box of the cereal on Facebook, Twitter or Instagram before Oct. 18th using the hashtag #Lucky10Sweepstakes.